PTN3381D

PTN3381D Enhanced performance HDMI/DVI level shifter with voltage regulator, dongle detection and supporting 3 Gbit/s operation Rev. 2 — 26 July 2012 Product data sheet 1. General description The PTN3381D is a high-speed level shifter device which converts four lanes of low-swing AC-coupled differential input signals to DVI v1.0 and HDMI v1.4b compliant open-drain current-steering differential output signals, up to 3 Gbit/s to support 36-bit deep color, 3D and 3 Gbit/s modes. Each of these channels provides a level-shifting differential buffer to translate from low-swing AC-coupled differential signaling on the source side, to TMDS-type DC-coupled differential current-mode signaling terminated into 50  to 3.3 V on the sink side. Additionally, the PTN3381D provides a single-ended active buffer for voltage translation of the HPD signal from 5 V on the sink side to 3.3 V on the source side and provides a channel with active buffering and level shifting of the DDC channel (consisting of a clock and a data line) between 3.3 V source-side and 5 V sink-side. The DDC channel is implemented using active I2C-bus buffer technology providing capacitive isolation, redriving and level shifting as well as disablement (isolation between source and sink) of the clock and data lines. To provide the highest level of integration in external adapter (or: dongle) applications, PTN3381D includes an on-board 5 V DC regulator. Its output is designed to provide the required 5 V power supply to th...